Electrode for electrolytic decomposition apparatus



June 15 19 26.

c. F. HOLMBOE ELECTRODE FOR ELECTROLYTIC DECOMPOSITION APPARATUS l92 5 2Sheets-Sheet 1 Filed Oct.

June 15 1926. v

, c. F. HOLMBOE ELECTRODE FOR ELECTHOLYTIC DECOMPOSITION APPARATUS Filed0013.1 1 25 -2 Sheets-Sheet 2 VII/A Ef/g 7 4 I If "/2.

Patented June 15, 1926.

UNITED STATES PATENT OFFICE.

CARL FREDRIK HOLMBOE, 0F IRIS, VESTRE AKER, NORWAY, ASSIGNOR OF ONE-HALFTO DE NORDISKE FABEIKER DE-NO-FA, OF OSLO, NORWAY.

ELECTRODE FOR EI'JECTROLYTIC DECOMPOSITION APPARATUS.

Application filed October 1, 1925, Serial No. 59,791,*and in France July4, 1925.

- The present invention relates to the type of electrodes which arecomposed of ribs fastened together so as to form a rigid frame.Electrodes of this type are described and shown in the U. S. A. patentspecification No. 1,548,840.

According to the present invention the efficiency of the ribs areincreased by providing the central part of the ribs with angle pieces orfinlike projections so that this part of the electrodes is broughtnearer to a parallel arranged electrode of opposite polarity, wherebythe electrolytical resistance of the entire system becomes considerablyreduced. The invention is illustrated by way of exani les in theaccompanying drawing in which Figs. 1, 2 and 3 show an embodiment of theelectrode in longitudinal sectional, cross sectional and plan viewsrespectively. Figs. 4, 5' and 6 show a modified embodiment of theelectrode.

In the illustrated exam les-the electrode is composed in substantiallythe same manner as shown in the above mentioned patent.

specification. Ribs-plate strips-3 of iron or other suitable metal arethreaded upon a number of bolts 1 and are held in the de-' sireddistance from one another between the end pieces 4 by means of tubepieces 2 which alternately with the plate strips 3 are threaded upon thebolts.

In the example shown in Figs. 1, 2 and 3 the current supply is arrangdin the same manner as shown in the above mentioned patentspecificationby means of plates 6 and bolts 10 secured to and insulatedfrom the cover 7.

The ribs 3 consisting of sheet metal carry wings on fins 11 which areformed by cutting and' gbending outwards the central parts of the sheetribs between the bolts. 4

Between the. ribs are placed the diaphragms 9 secured to the gascollecting bells 8 on the cover 7 of the electrolyzer vessel. Thecurrent supply takes lace by means of plate pieces 6 and spind es 10 asaccording to the above mentioned prior patent specification.

In the example illustrated on Figs. 4, 5 and 6 the current is su pliedto the end pieces 4, which are provlded with paws 12 which are fastenedto the walls-'14 of the electrolyzer vessel. The walls in this case mustbe conductors. The current then passes from these walls through theangle pieces 13, the paws 12 and the end pieces 4 to the bolts 1, andfrom these latter to the ribs 3 with fins 11.

I claim:

1. An electrode for electrolytic decomposition apparatus, comprising aplurality of interspaced, interconnected conductors providedat theircentral portions, with projections extending laterally from theconductors, and substantially coextensive with the length of saidconductors.

,2. An electrode of the class described,

comprising a plurality of interspaced, inter-- 4. An electrode forelectrolytic decomposition apparatus, comprising a plurality ofinterspaced conductors; and means for binding said conductors and saidspacing members into a rigid frame work, said binding members beingelectrically connected to said conductors and to the paraelectric wallsof said electrolyzing apparatus.

In testimony that I claim the foregoing as my invention, I have signedmy namc.

CARL FREDRIK HOLMBOE.

